Zoo Med.Reptile thermometer high range High Range Thermometer Liquid crystal thermometer for all types of reptile, amphibian or invertebrate enclosures. Scale from 70 to 105 F (21 to 40 C), with easy to read crystal coloring. Proper temperatures are a necessity for digestion and metabolic functions in reptiles and amphibians. This is the ideal first time thermometer for any cage, a reptile should never be sold or bought without one!